60 lines
4.0 KiB
HTML
60 lines
4.0 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Auto-sensing" />
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<meta name="abstract" content="If auto-negotiation fails, your server can match the line speed of its link partner." />
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<meta name="description" content="If auto-negotiation fails, your server can match the line speed of its link partner." />
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<meta name="DC.Relation" scheme="URI" content="rzajyethernetcapabilities.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzajyduplexmodedef.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzajyautonegotiation.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1999, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1999, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzajyautosensing" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Auto-sensing</title>
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</head>
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<body id="rzajyautosensing"><a name="rzajyautosensing"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Auto-sensing</h1>
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<div><p>If auto-negotiation fails, your server can match the line speed
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of its link partner.</p>
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<p> However, the adapter cannot sense the duplex mode. The server will default
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to half duplex, which can result in a duplex mismatch.</p>
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<p id="rzajyautosensing__duplex_mismatch"><a name="rzajyautosensing__duplex_mismatch"><!-- --></a></p>
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<div class="section"><h4 class="sectiontitle">Duplex mismatch</h4>The following is an example of a duplex
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mismatch: Your <span class="keyword">iSeries™</span>, configured
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for full duplex, is connecting to a hub configured for half duplex. The iSeries server
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begins sending information to the hub, which is waiting to receive. When
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the receive line is clear, the hub will then begin transmission back to the iSeries server.
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During this transmission, the iSeries receives the incoming data and
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(if it has data ready) begins transmitting to the hub. Because the hub is
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half duplex, it will see this unexpected receipt of data and will cancel the
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transmission in progress. This is called a collision. A duplex mismatch problem
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might be reported as a 'failure to connect' error, or it might cause a more
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subtle performance problem due to intermittent cancelled frames.</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzajyethernetcapabilities.htm" title="Ethernet capabilities, such as line speed and duplex mode, can enhance your server's performance.">Ethernet capabilities</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzajyduplexmodedef.htm" title="Depending on your server's capabilities and the duplex mode of the link partner you are attaching to, you can use either full or half duplex.">Duplex mode</a></div>
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<div><a href="rzajyautonegotiation.htm" title="Auto-negotiation is the preferred method of configuring your system's Ethernet connections.">Auto-negotiation</a></div>
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</div>
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</div>
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</body>
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</html> |